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Old 10-26-2012, 10:09 AM   #31
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So besides some clicking when I drive around nothing will really change until I shift into 4wd when I will gain the benefits?
That is correct. Steering is a bit more difficult but easily overcome.
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Old 02-07-2013, 07:27 PM   #32
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Great write up, thank you!

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Old 02-07-2013, 09:25 PM   #33
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I am doing my install on the Dana 30 Saturday. I should not have to expect.to remove the ring gear from the carrier right? Also does anyone have the torque specs for the bearing retainers and hubs?
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Old 02-07-2013, 09:58 PM   #34
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You shouldn't have to remove the ring gear from the carrier, no.

Here's a list of YJ torque specs: Jeep Wrangler YJ Vehicle TORQUE Specifications - TECH INFORMATION
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Old 02-08-2013, 07:50 AM   #35
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One other thing I have not been able to get a clear answer on. Break in period. I was planning on installing it, driving about 10 miles and hitting the trails to test it out. I thought unless you were changing carriers or the ring and pinion there is no break in period. I have seen other threads on this stating that lunchbox lockers have a 500 mile break in period same as a complete regear. Can someone give a solid answer on this? I am assuming there is not one regardless of what I heard unless someone tells me that is incorrect with a reason.
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Complete rebuild axle/engine/everything swap in progress: Building stock width 44's with 302 from 01 Explorer. Motor has GT40p heads, Cobra Intake, and truck cam. Running A9L EEC IV stand alone engine from late 80's-90's Mustang GT. Big Bearing NP435 married to NP205.
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Old 02-08-2013, 11:23 AM   #36
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Never mind, just called manufacturer. No break in period required.
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Old 02-08-2013, 10:22 PM   #37
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you made it look easy enough for me to do. nice!
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Old 02-15-2016, 10:42 AM   #38
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I've never run one before personally so I can't say, but they assure me that it will handle what I am gonna put through it and for the money its worth a shot.
Are you still running the spartan locker? If you are how has it help up or how did it hold up. Also would you suggest getting for both the front dana 30 and a rear dana 35
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Old 02-15-2016, 12:02 PM   #39
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Are you still running the spartan locker? If you are how has it help up or how did it hold up. Also would you suggest getting for both the front dana 30 and a rear dana 35
I am still running mine and it has held up well. I would not put one in the rear, as it will always be locked.
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Old 02-15-2016, 07:16 PM   #40
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I am still running mine and it has held up well. I would not put one in the rear, as it will always be locked.
Do you think I would be able to do the install in around 1 hour and 15 minutes. Thats about all the time I have to work in a fully equipped shop with a lift and all the tools. Also would I need a new seal for my dana 30?
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Old 03-04-2016, 12:42 PM   #41
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Do you think I would be able to do the install in around 1 hour and 15 minutes. Thats about all the time I have to work in a fully equipped shop with a lift and all the tools. Also would I need a new seal for my dana 30?
I don't look on here more than every few weeks anymore. Just saw this. Been trying to contribute more lately. Figured I would say that anyone who asks this question will need 2-4 hours for the Spartan install to do it properly. Not something you rush at all.

If you do not know the axle disassembly and reassembly off the top of your head enough to answer this question it will take a while. It can be done in an hour if you fly through knowing exactly what your going to be doing before you get to each step as you go. Stuff like what size six point sockets for the unit bearings, our spanner socket for the spindles on a 44. How long inner seals take to replace if you find a problem with one. (PIA no matter what) Also, some carriers require the ring is pulled off the carrier to get any lunchbox in. I even had this issue with a 44 front with 354 gears. So in no way thick cut or anything, but I couldn't fit a 30 spline Spartan past the ring gear no matter what I tried. With some axles you can shove the Spartan in without pulling the carrier at all. When you run into the problem I just described though, you have to pull the carrier. I also had this issue with a dana 30 that was a stock 410 ratio in a 4 banger, so no thick gears there either.

Whenever doing axle work, take the amount of time you think it will take you, double that, then add a little bit for good measure. That's how much time you should have when working with differentials. You do not have room for error. I didn't used to follow that time rule myself like I should have. After countless jeeps through my shop, I quote all work using that rule, and also give myself the same amount of time for the stuff I do. Before I had my own shop, I more than one had to leave a jeep or two overnight somewhere 30-45 min from home just so I could return and do it the next day.

One other thing here. After dealing with a lot of 44 axles, I suggest changing the unit bearing style to the more serviceable spindle 44 style whenever possible. Basically, knuckle out upgrade. Especially if you're going to high steer. It is a much stronger assembly for one of the most commonly broken parts. I used to go through unit bearings so regularly I kept a spare in my jeep at all times for trail fixes.

Hope this info helps some of you who look at this later on from a Google result to avoid headaches if doing this work yourself. It's definitely within the realm of shade tree mechanics. Just not something you take apart in a rush and throw together because of time constraints.

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